Hi I have the same problem. But I pass the crediential to the report at run time Code: Dim myFields As CrystalDecisions.CrystalReports.Engine.ParameterFieldDefinitions Dim thisField As CrystalDecisions.CrystalReports.Engine.ParameterFieldDefinition Dim myValue As CrystalDecisions.Shared.ParameterDiscreteValue Dim my_Param_Name As String Dim my_Param_Kind As CrystalDecisions.Shared.ParameterValueKind Dim crCurrentValues As CrystalDecisions.Shared.ParameterValues Dim _report As New CrystalDecisions.CrystalReports.Engine.ReportDocument _report = New CrystalDecisions.CrystalReports.Engine.ReportDocument _report.Load(Server.MapPath("~/Report/Extraction_Event.rpt")) _report.SetDatabaseLogon("XXX_USER_NAME", "XXX_PASSWORD", "SERVERNAME", "DATABASENAME") myFields = _report.DataDefinition.ParameterFields For Each thisField In myFields myValue = New CrystalDecisions.Shared.ParameterDiscreteValue my_Param_Name = "_GUID" 'thisField.ParameterFieldName my_Param_Kind = thisField.ParameterValueKind myValue.Value = Session("_GUID").ToString '"" _DTParameter.Rows(i).Item(1) crCurrentValues = thisField.CurrentValues crCurrentValues.Add(myValue) thisField.ApplyCurrentValues(crCurrentValues) Next CrystalReportViewer1.EnableDatabaseLogonPrompt = False CrystalReportViewer1.ReportSource = _report End Sub